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View Compilation Error

0_0_34045121_2973.c: In function 'main':
0_0_34045121_2973.c:7:5: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
     for(int n=0;n<t;n++){
     ^
0_0_34045121_2973.c:7:5: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code
0_0_34045121_2973.c:11:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
         for(int i=0;i<1001;i++){
         ^
0_0_34045121_2973.c:21:17: error: redefinition of 'i'
         for(int i=0;i<length_a;i++){
                 ^
0_0_34045121_2973.c:11:17: note: previous definition of 'i' was here
         for(int i=0;i<1001;i++){
                 ^
0_0_34045121_2973.c:21:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
         for(int i=0;i<length_a;i++){
         ^
0_0_34045121_2973.c:24:17: error: redefinition of 'i'
         for(int i=0;i<length_b;i++){
                 ^
0_0_34045121_2973.c:21:17: note: previous definition of 'i' was here
         for(int i=0;i<length_a;i++){
                 ^
0_0_34045121_2973.c:24:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
         for(int i=0;i<length_b;i++){
         ^
0_0_34045121_2973.c:27:17: error: redefinition of 'i'
         for(int i=0,temp=0;i<length_a+1||i<length_b+1;i++){
                 ^
0_0_34045121_2973.c:24:17: note: previous definition of 'i' was here
         for(int i=0;i<length_b;i++){
                 ^
0_0_34045121_2973.c:27:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
         for(int i=0,temp=0;i<length_a+1||i<length_b+1;i++){
         ^
0_0_34045121_2973.c:40:17: error: redefinition of 'i'
         for(int i=0;i<length_a;i++){
                 ^
0_0_34045121_2973.c:27:17: note: previous definition of 'i' was here
         for(int i=0,temp=0;i<length_a+1||i<length_b+1;i++){
                 ^
0_0_34045121_2973.c:40:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
         for(int i=0;i<length_a;i++){
         ^
0_0_34045121_2973.c:44:17: error: redefinition of 'i'
         for(int i=0;i<length_b;i++){
                 ^
0_0_34045121_2973.c:40:17: note: previous definition of 'i' was here
         for(int i=0;i<length_a;i++){
                 ^
0_0_34045121_2973.c:44:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
         for(int i=0;i<length_b;i++){
         ^
0_0_34045121_2973.c:48:17: error: redefinition of 'i'
         for(int i=length_sum-1;i>=0;i--){
                 ^
0_0_34045121_2973.c:44:17: note: previous definition of 'i' was here
         for(int i=0;i<length_b;i++){
                 ^
0_0_34045121_2973.c:48:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
         for(int i=length_sum-1;i>=0;i--){
         ^


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