save project3

Project3/.gitignore

@@ -0,0 +1,4 @@
+/bin
+/obj
+/Project3.depend
+/Project3.layout

Project3/Project3.cbp

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+<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
+<CodeBlocks_project_file>
+	<FileVersion major="1" minor="6" />
+	<Project>
+		<Option title="Project3" />
+		<Option pch_mode="2" />
+		<Option compiler="gcc" />
+		<Build>
+			<Target title="Debug">
+				<Option output="bin/Debug/Project3" prefix_auto="1" extension_auto="1" />
+				<Option object_output="obj/Debug/" />
+				<Option type="1" />
+				<Option compiler="gcc" />
+				<Compiler>
+					<Add option="-g" />
+				</Compiler>
+			</Target>
+			<Target title="Release">
+				<Option output="bin/Release/Project3" prefix_auto="1" extension_auto="1" />
+				<Option object_output="obj/Release/" />
+				<Option type="1" />
+				<Option compiler="gcc" />
+				<Compiler>
+					<Add option="-O2" />
+				</Compiler>
+				<Linker>
+					<Add option="-s" />
+				</Linker>
+			</Target>
+		</Build>
+		<Compiler>
+			<Add option="-Wall" />
+		</Compiler>
+		<Unit filename="main.c">
+			<Option compilerVar="CC" />
+		</Unit>
+		<Extensions>
+			<lib_finder disable_auto="1" />
+		</Extensions>
+	</Project>
+</CodeBlocks_project_file>

Project3/main.c

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+#include <stdio.h>
+
+#define MAX_ROWS 100
+#define MAX_COLS 100
+
+int main() {
+    int n, m;
+    int A[MAX_ROWS][MAX_COLS];
+
+    // Input matrix dimensions
+    printf("Enter the number of rows (n): ");
+    scanf("%d", &n);
+    printf("Enter the number of columns (m): ");
+    scanf("%d", &m);
+
+    // Input matrix elements
+    printf("Enter the elements of matrix A (%d x %d):\n", n, m);
+    for (int i = 0; i < n; i++) {
+        for (int j = 0; j < m; j++) {
+            scanf("%d", &A[i][j]);
+        }
+    }
+
+    // Replace zero elements
+    for (int j = 0; j < m; j++) {
+        int firstNonZero = -1;
+
+        // Find the first non-zero element in the column
+        for (int i = 0; i < n; i++) {
+            if (A[i][j] != 0) {
+                firstNonZero = A[i][j];
+                break;
+            }
+        }
+
+        // Replace zero elements with the found first non-zero value
+        if (firstNonZero != -1) { // If a non-zero element was found
+            for (int i = 0; i < n; i++) {
+                if (A[i][j] == 0) {
+                    A[i][j] = firstNonZero;
+                }
+            }
+        }
+    }
+
+    // Output modified matrix
+    printf("Modified matrix A:\n");
+    for (int i = 0; i < n; i++) {
+        for (int j = 0; j < m; j++) {
+            printf("%d ", A[i][j]);
+        }
+        printf("\n");
+    }
+
+    printf("Press any key to exit...\n");
+    getchar();
+    getchar();
+    return 0;
+}